Question

a square + b square =

Answer 1

Hey
Here is the answer

we need to derive this formula from

${(a + b) }^{2} = {a }^{2} + 2ab + {b }^{2} \\ {(a + b) }^{2} - 2ab = {a}^{2} + {b}^{2}$
Hope it helps to you.